./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 21f21a8889dc24483eb8966f6e76616267c992bf ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:30:17,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:30:17,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:30:17,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:30:17,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:30:17,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:30:17,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:30:17,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:30:17,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:30:17,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:30:17,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:30:17,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:30:17,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:30:17,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:30:17,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:30:17,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:30:17,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:30:17,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:30:17,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:30:17,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:30:17,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:30:17,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:30:17,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:30:17,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:30:17,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:30:17,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:30:17,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:30:17,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:30:17,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:30:17,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:30:17,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:30:17,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:30:17,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:30:17,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:30:17,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:30:17,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:30:17,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:30:17,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:30:17,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:30:17,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:30:17,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:30:17,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:30:17,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:30:17,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:30:17,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:30:17,981 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:30:17,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:30:17,981 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:30:17,982 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:30:17,982 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:30:17,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:30:17,982 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:30:17,982 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:30:17,982 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:30:17,983 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:30:17,983 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:30:17,983 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:30:17,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:30:17,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:30:17,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:30:17,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:30:17,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:30:17,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:30:17,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:30:17,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:30:17,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:30:17,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:30:17,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:30:17,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:30:17,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:30:17,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:30:17,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:30:17,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:30:17,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:30:17,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:30:17,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:30:17,987 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:30:17,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:30:17,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:30:17,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:30:17,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:30:17,988 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21f21a8889dc24483eb8966f6e76616267c992bf [2020-12-09 20:30:18,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:30:18,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:30:18,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:30:18,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:30:18,179 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:30:18,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe035_pso.oepc.i [2020-12-09 20:30:18,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/data/3d37fb862/1bf5fa5b84314ebba45c953e41ecb39c/FLAG572697483 [2020-12-09 20:30:18,647 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:30:18,648 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc.i [2020-12-09 20:30:18,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/data/3d37fb862/1bf5fa5b84314ebba45c953e41ecb39c/FLAG572697483 [2020-12-09 20:30:18,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/data/3d37fb862/1bf5fa5b84314ebba45c953e41ecb39c [2020-12-09 20:30:18,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:30:18,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:30:18,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:30:18,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:30:18,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:30:18,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:30:18" (1/1) ... [2020-12-09 20:30:18,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7720750e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:18, skipping insertion in model container [2020-12-09 20:30:18,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:30:18" (1/1) ... [2020-12-09 20:30:18,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:30:18,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:30:18,844 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc.i[950,963] [2020-12-09 20:30:18,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:30:18,968 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:30:18,979 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/sv-benchmarks/c/pthread-wmm/safe035_pso.oepc.i[950,963] [2020-12-09 20:30:19,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:30:19,072 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:30:19,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19 WrapperNode [2020-12-09 20:30:19,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:30:19,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:30:19,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:30:19,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:30:19,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:30:19,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:30:19,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:30:19,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:30:19,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... [2020-12-09 20:30:19,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:30:19,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:30:19,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:30:19,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:30:19,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:30:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 20:30:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 20:30:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:30:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 20:30:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 20:30:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 20:30:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 20:30:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 20:30:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 20:30:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 20:30:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:30:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 20:30:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:30:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:30:19,198 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 20:30:19,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:30:19,457 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 20:30:19,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:30:19 BoogieIcfgContainer [2020-12-09 20:30:19,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:30:19,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:30:19,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:30:19,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:30:19,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:30:18" (1/3) ... [2020-12-09 20:30:19,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2690dc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:30:19, skipping insertion in model container [2020-12-09 20:30:19,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:30:19" (2/3) ... [2020-12-09 20:30:19,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2690dc4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:30:19, skipping insertion in model container [2020-12-09 20:30:19,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:30:19" (3/3) ... [2020-12-09 20:30:19,465 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-12-09 20:30:19,475 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 20:30:19,475 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:30:19,478 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:30:19,479 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 20:30:19,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,513 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,515 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,516 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,516 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,517 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,530 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,530 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,532 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,532 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,532 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 20:30:19,534 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 20:30:19,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 20:30:19,566 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:30:19,566 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:30:19,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:30:19,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:30:19,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:30:19,567 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:30:19,567 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:30:19,567 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:30:19,579 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 20:30:19,581 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 20:30:19,584 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 20:30:19,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 20:30:19,619 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 20:30:19,619 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 20:30:19,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 20:30:19,624 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 20:30:21,378 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 20:30:21,588 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-09 20:30:21,666 INFO L131 LiptonReduction]: Checked pairs total: 2511 [2020-12-09 20:30:21,666 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-09 20:30:21,670 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 20:30:21,692 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 20:30:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 20:30:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:30:21,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:21,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:21,698 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1857977145, now seen corresponding path program 1 times [2020-12-09 20:30:21,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:21,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054043366] [2020-12-09 20:30:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:21,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054043366] [2020-12-09 20:30:21,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:21,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:30:21,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559559760] [2020-12-09 20:30:21,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 20:30:21,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:21,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 20:30:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:30:21,831 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 20:30:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:21,852 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 20:30:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 20:30:21,853 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 20:30:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:21,863 INFO L225 Difference]: With dead ends: 362 [2020-12-09 20:30:21,863 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 20:30:21,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:30:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 20:30:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 20:30:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 20:30:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 20:30:21,910 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 20:30:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:21,910 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 20:30:21,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 20:30:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 20:30:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 20:30:21,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:21,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:21,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:30:21,912 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1762722497, now seen corresponding path program 1 times [2020-12-09 20:30:21,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:21,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853080036] [2020-12-09 20:30:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853080036] [2020-12-09 20:30:22,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:30:22,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521830815] [2020-12-09 20:30:22,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:30:22,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:30:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:30:22,009 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 20:30:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,059 INFO L93 Difference]: Finished difference Result 552 states and 1504 transitions. [2020-12-09 20:30:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:30:22,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 20:30:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,064 INFO L225 Difference]: With dead ends: 552 [2020-12-09 20:30:22,064 INFO L226 Difference]: Without dead ends: 382 [2020-12-09 20:30:22,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:30:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-12-09 20:30:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 298. [2020-12-09 20:30:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 20:30:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 792 transitions. [2020-12-09 20:30:22,090 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 792 transitions. Word has length 9 [2020-12-09 20:30:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,090 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 792 transitions. [2020-12-09 20:30:22,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:30:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 792 transitions. [2020-12-09 20:30:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 20:30:22,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 20:30:22,092 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1189149087, now seen corresponding path program 1 times [2020-12-09 20:30:22,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318339595] [2020-12-09 20:30:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318339595] [2020-12-09 20:30:22,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:30:22,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718117034] [2020-12-09 20:30:22,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:30:22,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:30:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:30:22,164 INFO L87 Difference]: Start difference. First operand 298 states and 792 transitions. Second operand 5 states. [2020-12-09 20:30:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,198 INFO L93 Difference]: Finished difference Result 338 states and 836 transitions. [2020-12-09 20:30:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:30:22,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 20:30:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,200 INFO L225 Difference]: With dead ends: 338 [2020-12-09 20:30:22,200 INFO L226 Difference]: Without dead ends: 222 [2020-12-09 20:30:22,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:30:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-12-09 20:30:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 182. [2020-12-09 20:30:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-12-09 20:30:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 468 transitions. [2020-12-09 20:30:22,206 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 468 transitions. Word has length 10 [2020-12-09 20:30:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,206 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 468 transitions. [2020-12-09 20:30:22,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:30:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 468 transitions. [2020-12-09 20:30:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 20:30:22,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 20:30:22,208 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,208 INFO L82 PathProgramCache]: Analyzing trace with hash 681758540, now seen corresponding path program 1 times [2020-12-09 20:30:22,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914940716] [2020-12-09 20:30:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914940716] [2020-12-09 20:30:22,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:30:22,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21954964] [2020-12-09 20:30:22,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:30:22,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:30:22,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:30:22,245 INFO L87 Difference]: Start difference. First operand 182 states and 468 transitions. Second operand 3 states. [2020-12-09 20:30:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,252 INFO L93 Difference]: Finished difference Result 146 states and 331 transitions. [2020-12-09 20:30:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:30:22,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 20:30:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,253 INFO L225 Difference]: With dead ends: 146 [2020-12-09 20:30:22,253 INFO L226 Difference]: Without dead ends: 146 [2020-12-09 20:30:22,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:30:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-09 20:30:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-12-09 20:30:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-09 20:30:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 331 transitions. [2020-12-09 20:30:22,257 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 331 transitions. Word has length 12 [2020-12-09 20:30:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,258 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 331 transitions. [2020-12-09 20:30:22,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:30:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 331 transitions. [2020-12-09 20:30:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:30:22,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 20:30:22,259 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2034044923, now seen corresponding path program 1 times [2020-12-09 20:30:22,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535014106] [2020-12-09 20:30:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535014106] [2020-12-09 20:30:22,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:30:22,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115335211] [2020-12-09 20:30:22,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 20:30:22,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 20:30:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:30:22,295 INFO L87 Difference]: Start difference. First operand 146 states and 331 transitions. Second operand 4 states. [2020-12-09 20:30:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,308 INFO L93 Difference]: Finished difference Result 101 states and 200 transitions. [2020-12-09 20:30:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 20:30:22,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 20:30:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,309 INFO L225 Difference]: With dead ends: 101 [2020-12-09 20:30:22,309 INFO L226 Difference]: Without dead ends: 101 [2020-12-09 20:30:22,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 20:30:22,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-09 20:30:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2020-12-09 20:30:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-09 20:30:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 190 transitions. [2020-12-09 20:30:22,312 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 190 transitions. Word has length 13 [2020-12-09 20:30:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,312 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 190 transitions. [2020-12-09 20:30:22,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 20:30:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 190 transitions. [2020-12-09 20:30:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:30:22,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 20:30:22,313 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash -666358640, now seen corresponding path program 1 times [2020-12-09 20:30:22,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109380485] [2020-12-09 20:30:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109380485] [2020-12-09 20:30:22,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:30:22,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934123177] [2020-12-09 20:30:22,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:30:22,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:30:22,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:30:22,360 INFO L87 Difference]: Start difference. First operand 97 states and 190 transitions. Second operand 5 states. [2020-12-09 20:30:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,391 INFO L93 Difference]: Finished difference Result 181 states and 338 transitions. [2020-12-09 20:30:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:30:22,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 20:30:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,392 INFO L225 Difference]: With dead ends: 181 [2020-12-09 20:30:22,392 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 20:30:22,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:30:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 20:30:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 97. [2020-12-09 20:30:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-09 20:30:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-12-09 20:30:22,395 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 15 [2020-12-09 20:30:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,395 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-12-09 20:30:22,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:30:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-12-09 20:30:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 20:30:22,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 20:30:22,396 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash -574188510, now seen corresponding path program 2 times [2020-12-09 20:30:22,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270143937] [2020-12-09 20:30:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270143937] [2020-12-09 20:30:22,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:30:22,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278830954] [2020-12-09 20:30:22,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:30:22,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:30:22,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:30:22,433 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 5 states. [2020-12-09 20:30:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,448 INFO L93 Difference]: Finished difference Result 77 states and 147 transitions. [2020-12-09 20:30:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:30:22,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 20:30:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,449 INFO L225 Difference]: With dead ends: 77 [2020-12-09 20:30:22,449 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 20:30:22,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:30:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 20:30:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-12-09 20:30:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-09 20:30:22,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 123 transitions. [2020-12-09 20:30:22,451 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 123 transitions. Word has length 15 [2020-12-09 20:30:22,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,451 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 123 transitions. [2020-12-09 20:30:22,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:30:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 123 transitions. [2020-12-09 20:30:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 20:30:22,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 20:30:22,452 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,452 INFO L82 PathProgramCache]: Analyzing trace with hash -681441042, now seen corresponding path program 1 times [2020-12-09 20:30:22,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030835721] [2020-12-09 20:30:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030835721] [2020-12-09 20:30:22,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 20:30:22,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869418551] [2020-12-09 20:30:22,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:30:22,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:30:22,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:30:22,504 INFO L87 Difference]: Start difference. First operand 65 states and 123 transitions. Second operand 6 states. [2020-12-09 20:30:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,564 INFO L93 Difference]: Finished difference Result 129 states and 226 transitions. [2020-12-09 20:30:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 20:30:22,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 20:30:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,565 INFO L225 Difference]: With dead ends: 129 [2020-12-09 20:30:22,565 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 20:30:22,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 20:30:22,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 20:30:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-12-09 20:30:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-09 20:30:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 76 transitions. [2020-12-09 20:30:22,568 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 76 transitions. Word has length 18 [2020-12-09 20:30:22,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,568 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 76 transitions. [2020-12-09 20:30:22,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:30:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 76 transitions. [2020-12-09 20:30:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 20:30:22,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 20:30:22,569 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1665896384, now seen corresponding path program 2 times [2020-12-09 20:30:22,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571456494] [2020-12-09 20:30:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571456494] [2020-12-09 20:30:22,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 20:30:22,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312987513] [2020-12-09 20:30:22,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:30:22,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:30:22,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:30:22,628 INFO L87 Difference]: Start difference. First operand 47 states and 76 transitions. Second operand 6 states. [2020-12-09 20:30:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,667 INFO L93 Difference]: Finished difference Result 61 states and 98 transitions. [2020-12-09 20:30:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:30:22,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-09 20:30:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,668 INFO L225 Difference]: With dead ends: 61 [2020-12-09 20:30:22,668 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 20:30:22,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 20:30:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 20:30:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-09 20:30:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 20:30:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-09 20:30:22,670 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-12-09 20:30:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,670 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-09 20:30:22,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:30:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-09 20:30:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 20:30:22,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:30:22,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:30:22,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 20:30:22,671 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:30:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:30:22,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1696595058, now seen corresponding path program 3 times [2020-12-09 20:30:22,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:30:22,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214158818] [2020-12-09 20:30:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:30:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:30:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:30:22,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214158818] [2020-12-09 20:30:22,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:30:22,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 20:30:22,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48730871] [2020-12-09 20:30:22,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:30:22,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:30:22,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:30:22,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:30:22,730 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-09 20:30:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:30:22,766 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-09 20:30:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:30:22,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 20:30:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:30:22,767 INFO L225 Difference]: With dead ends: 36 [2020-12-09 20:30:22,767 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:30:22,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:30:22,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:30:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:30:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:30:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:30:22,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 20:30:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:30:22,768 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:30:22,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:30:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:30:22,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:30:22,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 20:30:22,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:30:22 BasicIcfg [2020-12-09 20:30:22,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:30:22,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:30:22,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:30:22,771 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:30:22,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:30:19" (3/4) ... [2020-12-09 20:30:22,774 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:30:22,778 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 20:30:22,779 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 20:30:22,779 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 20:30:22,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 20:30:22,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 20:30:22,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:30:22,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:30:22,816 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_77699bbe-c03b-4013-81ae-b4b7e0a744cc/bin/utaipan/witness.graphml [2020-12-09 20:30:22,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:30:22,818 INFO L168 Benchmark]: Toolchain (without parser) took 4140.06 ms. Allocated memory was 83.9 MB in the beginning and 151.0 MB in the end (delta: 67.1 MB). Free memory was 62.0 MB in the beginning and 98.0 MB in the end (delta: -36.0 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:30:22,818 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 83.9 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:30:22,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.43 ms. Allocated memory is still 83.9 MB. Free memory was 61.8 MB in the beginning and 53.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:30:22,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 83.9 MB. Free memory was 53.4 MB in the beginning and 51.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:30:22,820 INFO L168 Benchmark]: Boogie Preprocessor took 22.47 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 50.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:30:22,820 INFO L168 Benchmark]: RCFGBuilder took 326.86 ms. Allocated memory is still 83.9 MB. Free memory was 50.0 MB in the beginning and 41.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:30:22,821 INFO L168 Benchmark]: TraceAbstraction took 3310.56 ms. Allocated memory was 83.9 MB in the beginning and 151.0 MB in the end (delta: 67.1 MB). Free memory was 40.7 MB in the beginning and 101.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:30:22,821 INFO L168 Benchmark]: Witness Printer took 45.98 ms. Allocated memory is still 151.0 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:30:22,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 83.9 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.43 ms. Allocated memory is still 83.9 MB. Free memory was 61.8 MB in the beginning and 53.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 83.9 MB. Free memory was 53.4 MB in the beginning and 51.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.47 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 50.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 326.86 ms. Allocated memory is still 83.9 MB. Free memory was 50.0 MB in the beginning and 41.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3310.56 ms. Allocated memory was 83.9 MB in the beginning and 151.0 MB in the end (delta: 67.1 MB). Free memory was 40.7 MB in the beginning and 101.2 MB in the end (delta: -60.5 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Witness Printer took 45.98 ms. Allocated memory is still 151.0 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 845 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 2511 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 209 SDtfs, 192 SDslu, 317 SDs, 0 SdLazy, 140 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 179 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 7590 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...